Add 28/36 and 20/70
28/36 + 20/70 is 67/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 70 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 36 × 35 = 1260,
28/36 = 28 × 35/36 × 35 = 980/1260 - Likewise, for the 2nd fraction, since 70 × 18 = 1260,
20/70 = 20 × 18/70 × 18 = 360/1260 - Add the two like fractions:
980/1260 + 360/1260 = 980 + 360/1260 = 1340/1260 - 1340/1260 simplified gives 67/63
- So, 28/36 + 20/70 = 67/63
In mixed form: 14/63
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